Pharmaceutical Grade Sulfanilic Acid USP from China
USP-grade sulfanilic acid meets pharmacopeia standards for use in diagnostic reagents and synthesis of sulfa drugs, classified under HTS 2921.42.22.00 as a pure aromatic monoamine derivative. Its high purity ensures compliance with Chapter 29 requirements for separate chemically defined compounds.
Duty Rate — China → United States
41.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Import Tips
• Include USP/EP certificate and DMF if destined for pharma use; FDA prior notice may apply
• Segregate from industrial grades to avoid contamination claims during customs inspection
• Watch for reclassification to 3002 if pre-formulated as immunological product